Piston closure for waterless gas holders



Aug. 22, 1933. F. EINBECK ET AL PISTON CLOSURE FOR WATERLESS GAS HOLDERS Filed Dec, 17, 1951 2 Sheets-Sheet l Aug. 22, 1933. F. EINBECK ET AL 1,924,029

PISTON CLOSURE FOR WATERLESS GAS HOLDERS Filed Dec. 17, 1931 2 Sheets-Sheet 2 f? 5CHORMAA/N a //7Ve/7/U/s. I; f? A m/550 Patented Au 22, 1933 PATENT;- F

1,924,029 I I I I PISTON CLOSURE FOR/WATERLESS- GAS noLnERs Friedrich Einbeck and Friedrich .Schiirmann, Dortmund, Germany, assignors to the firm Aug. Kliinne, Dortmund, Germany I Application December 17, 193 1,.S erial-No. 581,762, and in Germany December 2'7, 1930 14 Claims. (oi. 43-175) This invention'relates to apiston-closure for a waterless gas holder. Piston closures are known in which a sealing ring is carried on an expansible metal ring consisting of a number of segments 5 or parts connected to the edge of the piston and loaded by means of weights or springs.

In the known piston closures, the segments of the metal rings are united firmly and strongly to each other." On account of this the piston closure of the container wall, which is never an exact cylinder, cannot fit exactly.

The principal feature of this invention lies in the fact that the ring segments are separated from each other by perpendicular gaps, which are 16 covered by a circular bandof ductile metal, where- Y by this band isfastened at its upper end between the closure ring and the segments of the metal rmg.

Such a piston closure is a substantial improvementover the known piston closures, in that it always can conform to and pass over the container wall exactly. I I

The subject matter of the invention is illustrated by way of example in the accompanying drawings. Y I

Fig. 1 is a vertical partial section through the closing piston. I

Fig. 2 is a side elevation. I

Fig. 3 is a plan.

Fig.4 is a vertical partial section through a second form of construction. Fig. 5 is a side elevation.

Fig. 6 is a plan. I I

Fig. 7 shows, in plan, a furtherform of construction of the loading of the metal ring.

Figs. 8 and 9 show a horizontal partial section through a detail of the closing piston.

The packing or sealing ring a is in the known way pressed against the wall d of the container by means of the leversb with counterweights c. The packing ring a is carried byan expansible metal ring consisting of a number of separate parts or segments e arranged alongside or in sideby-side relationto each other. Theparts e as 5 shown in Figs.'1 and 2 are at their lower end firmly connected to the piston f, whilstthe upper end,

which is provided with a hole, is movable radially on a pin i which is carried by a ring it,

" As'shown in Figs. 2 and 3, each lever 6 acts on four ring segments e. As shown, however, in Figs. 5 and 6, a special lever can be provided for each ring segment e, or again, as shown in Fig.

I 7, one lever can act on two ring segments. 5 Owing to the described arrangement, the ring cilitate the beating of the band against the inner much smaller "than at the outer circumference, where the packing ring-is mounted. This'diftions of-the corrugations he more closely together segments 6 are secured against any vertical movement at the piston (relatively to the piston).

' Consequently, when the piston rises and falls the ring segments eare carried along directly with the packing or sealing ring a. An over-length 0 must be'given to the ring segments e by means of a slight deviation from the vertical, so as to allow of the wholeof the packing surface of the packing ring a being pressedyeven in the case of horizontal movements, outwardspi. e., towards the Wall of 5 the container. The gaps '70 between the individual ring segments earecoveredover gas-tight by means of a surrounding band I. The band Zis connected gastight to the packing ring a as well as to the piston 71) 1. Since the band must be gas-tightit may consist .o'f rubbered fabric. It mayalso be made of some ductile metal, such as lead, copper, etc. In

addition to this, a band made of rubbered fabric by means of the band Z.

The upperend of each ring segment e is pro- Ivided with a pulley m which is displaceable on a horizontal, radially directed short bar n.

8 In this form of construction of the ring, the

"individual ring segments ofier less resistance to their displacement by the lever b'than is the case in the form of construction shown in Figs. 1 to 3. As shown in Figs. 5 and 6, each individual ring segment is loaded by means of a special lever b.

, One single lever 11 could, however, load several ring segments, as shown in Fig. 3 and in Fig. '7.

When, as'shown in Fig. 4,1the lower end of the band'l iscurved, it will be found advisable to give the metalinsertion 1L a corrugated or undulated cross section, as shown in Fig. 9. The corrugations are preferably small dimensioned; they faedge. 1

. This beating or compression of-the band at the inner circumference is necessary, because the cir- I cumference of the band at the inneredge, where I it is secured to the closing piston (see Fig. 4) is ference in circumference is equalized by the compression of the corrugations; the elevated por at the point where the band is secured to the disc than at the point where the band is secured to the packing ring.

We claim:

1. Ina piston closure for waterless gas holders a sealing ring, an expansible metal ring carrying said sealing ring, levers pressing said sealing ring against the wall of the holder, said metal ring consisting of a number of segments separated by a vertical gaps from one anothen'positioned in sideby-side relation and secured to the piston against vertical displacement, a surrounding band made of fabric provided with a metal insertion covering the gaps between said ring segments, saidmetal insertion being undulated, the undulations running in the direction of the circumference.

2. In a piston closure for waterless-gas holders a sealing ring, an expansible metal ring carrying said sealing ring, levers pressing said sealing" 3. In a piston closure for waterless gas-holders a sealing ring, an expansible metal ring carrying said sealingring, levers pressing said sealing i ring against the Wall of the holder, said .metal ring consisting of a number of segments positioned side by side and separated from each other by vertical gaps, and a surrounding bandof ductile metal, said band covering and sealing ofi? said gaps and being secured with-its upperend between said sealing ring and the segments of said metal ring, I V

' 4. In a piston closure for waterless gas-holders a sealing ring, an expansible metal ring carrying said sealing ring, levers pressing said sealing ring against the wall of theholder, said metal ring consisting of a number of segmentsarranged side'by side and separatedirom each other by vertical gaps, and a surrounding band of fabric provided with a metal insertion, said band covering andsealing off said gaps and being secured with its upper end between said sealing ring and the segments of said metal ring. i

5. In a piston closure for waterless gas-hold;- ers a sealing ring,ian expansible metal ring carrying said sealing ring, levers pressing said sealing ringagainst the wall of the holder, said metal ring consisting of a number of segments arranged side by, side and separated fromv each other by vertical gaps, a surrounding band ofductile metal, saidband covering and sealing 01? said gaps and being secured with its upper end between said sealing ring and the segments of said metal .ring, and radialbars on said piston, said bars carrying the upper ends of said metal ring seg ment, and said segments being movable in a radial direction upon said bars.

, 6. In a piston closure for waterless gas-holders a sealing ring, an expansible metalv ring carrying said sealing ring, levers pressing said sealing ring against the wall of the holder, said metal ring consisting of a number of segments arranged sideby side and separated from each .otherby vertical gaps, a surrounding band oi ductile metal, said band covering and sealing said gaps'and being secured with its upper end between said sealing ring and the segments of said metal ring, radial bars on said piston,

and pulleys on said bars carrying the upper ends of said metal ring segments.

7; In a piston closure for waterless gas-holders a sealing ring, an expansiole metal ring carrying said sealing ring, levers pressing said sealing ring against the wall of the holder, said metal ring consisting of a number of segments arranged side by sideiand separated from each other by vertical gaps, a surrounding band of ductile metal, said band covering and sealing off said gaps and being secured with its upper end between said sealing ring and the segments of said metal ring, radial bars on said piston, pulleys onsaid bars carrying the upper ends of said metal ring segments, and brackets carrying said 7 bars and adapted to prevent lifting of said pulleys from said bars.

8. In a piston closure for waterless gas-holders a sealing ring, an expansible metal ring carrying said sealing ring, levers pressing Said sealing ring against the wall of the holder, said metal ring consisting of anumber of segments arranged sideby side andseparated from'each other by vertical gaps, and a surrounding band of ductile metal, said band covering and sealing off said gaps and being secured with its upper end between said sealing ring and these'gments of said metal ring, and said segments and said band being connected at their lower ends firmly and closely with the piston. g l i 9. In a piston closure for waterlessgas-holders a sealing ring, an expansible metal ring carrying said sealing ring, levers pressing said'sealing ring against the wall of the'holder, said metal t ring consisting of a number of segmentsarranged side by side and separated from each other by vertical gaps, and a surrounding band of ductile metal, said band covering and sealing ofi said gaps and being secured with its upper endbew tween said sealing ring and the segments of said 11:5

metal ring to provide a gas-tight 'connectionbetween the sealing ring and the closing piston, and said segments only extending to ,substantially the lower end of said sealing ring,

10. In a piston closure for waterless gas-holders a sealing ring, an expansible metal ring carrying said sealing ring, levers pressing said sealing ring against the wall of the holder, said metal 'ring consisting of a number of segments arranged side 4 by side and separatedirom each other by vertical gaps, and a surrounding, band of ductile metal, said band covering and sealing off said gaps and being secured with its upper end between said sealing ring and the segments of said metal ring, one lever arm of each pressing lever being'forked and operating on more than one segmentof said metal ring. f

11. v In a pistonclosurefor Waterless gas-holders a sealing ring, an expansible metal ring carrying said sealing ring, levers pressingsaid sealing ring against the wall of the holder, saidm'etal ring consisting of a number of segments arrange'd side by side and separated from each other by vertical gaps, and a surrounding band of Iductile" metal, said band. covering and sealing said gaps andbeing secured with its upper .end between said sealing ring and the segments of-said metal ring, and said metal band being formed with an undulated sectional outlineto obtaingreater flexibility. a I r 12. In a piston closure for waterless gas-holders a sealing ring, an expansible metalrin'glcarrying said sealing ring, levers pressing said sealing ring ing ring and segments pliably joining said segby side and separated from each other by vertical gaps, and a surrounding band of fabric provided with a metal insertion, said bandcovering and.

sealing off said gaps and being secured with its upper end between said sealing ring and the segments of said metal ring, and said metal band being formed with an undulated sectional outline to upon the piston, and a laminated band'secured to the piston and interveningly betweenthe sealments;

' 14. A movable closure for waterless gas holders,

comprising a piston, a sealing ring, a dilatable ring carrying said sealing ring mounted upon said piston, means for normally'dilating said dilatable ring to press the sealingringagainst the wall of the holder, said dilatable ring consisting of a plurality of segments suspendingly sustained upon the piston, and a flexible band substantially impervious to gas secured to the piston and interveningly between the sealing ring and segments, pliably joining said segments.

FRIEDRICH EINBIECK.

FRIEDRICH SCHURMANN. 

